chamilo-lms2/main/messages/index.php

<?php
/* For licensing terms, see /license.txt */
/**
 * @package chamilo.messages
 */
require_once __DIR__.'/../inc/global.inc.php';
if (api_get_setting('allow_social_tool') == 'true' && api_get_setting('allow_message_tool') == 'true') {
    header('Location:inbox.php?f=social');
} elseif (api_get_setting('allow_message_tool') == 'true') {
    header('Location:inbox.php');
}
exit;